<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
		<!--内嵌式-->
<!-- 		<style type="text/css">
			div{
				background-color: green;
				height: 200px;
				width: 200px;
			}
		</style> -->
		<link rel="stylesheet" type="text/css" href="css/index.css"/>
	</head>
	<body>
		<!--内容与表现
			内容：HTML  
			表现：CSS
		-->
		
		<!--行内样式表-->
<!-- 		<div style="background-color: green;
				height: 200px;
				width: 200px;">你好</div> -->
				
				
		<div>你好</div>		
	</body>
</html>
